Extract and collect translation keys from various files in a Laravel project. The purpose of this script is to identify strings that are wrapped in translation functions or language helpers like this.__(), __() or trans() within JavaScript, PHP, and Vue files, and then save those keys into a JSON file for further processing or translation manage…

collect-translations.php

<?php

$vueDirectory = './resources/js';
$backendDirectory = './app';
$vendorDirectory = './vendor';
$pattern = '/(?<!\\\\)(?:this\.__|__|trans)\(\s*(["\'])((?:\\\\.|(?!\1).)*)\1/s';
$translations = [];
$jsonFile = 'translations.json';

function collectKeys($directory, $pattern, &$translations): void
{
    $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($directory));
    $regex = new RegexIterator($iterator, '/^.+\.(vue|js|php)$/i', RegexIterator::GET_MATCH);

    foreach ($regex as $file) {
        $content = file_get_contents($file[0]);

        if (preg_match_all($pattern, $content, $matches)) {
            foreach ($matches[2] as $match) {
                $extractedText = str_replace("\\'", "'", $match);
                if (!in_array($extractedText, $translations)) {
                    $translations[$extractedText] = $extractedText;
                    echo sprintf('[%s] - Added Key: %s', $directory, $extractedText) . PHP_EOL;
                }
            }
        }
    }
}

// Collect keys from Vue files
collectKeys($vueDirectory, $pattern, $translations);
// Collect keys from backend files
collectKeys($backendDirectory, $pattern, $translations);
// Collect keys from vendor files
//collectKeys($vendorDirectory, $pattern, $translations);

// Store the collected keys in a JSON file
$translationsJson = json_encode($translations, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);

file_put_contents($jsonFile, $translationsJson);
echo "Translations extracted and saved to $jsonFile" . PHP_EOL;
echo "Total translations: " . count($translations) . PHP_EOL;

crowdin.yml

files:
  - source: translations.json
    translation: /resources/lang/%osx_locale%.json